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The Daintree Rainforest in Queensland, Australia.
The Daintree Rainforest in Queensland, Australia. The Daintree Rainforest is a Tropical rainforest near Daintree Queensland, on the coast north of Cairns in Tropical far north of Queensland is a state of Australia, occupying the north-eastern corner of the mainland continent For a topic outline on this subject see List of basic Australia topics.
General distribution of tropical rainforest
General distribution of tropical rainforest
General distribution of temperate rainforest.
General distribution of temperate rainforest.
The Daintree Rainforest near Cairns, in Queensland, Australia.
The Daintree Rainforest near Cairns, in Queensland, Australia. The Daintree Rainforest is a Tropical rainforest near Daintree Queensland, on the coast north of Cairns in Tropical far north of Queensland is a state of Australia, occupying the north-eastern corner of the mainland continent For a topic outline on this subject see List of basic Australia topics.

Rainforests are forests characterized by high rainfall, with definitions setting minimum normal annual rainfall between 1750-2000 mm (68-78 inches). A forest is an area with a high density of Trees There are many definitions of a forest based on various criteria Rain is Liquid precipitation. On Earth it is the condensation of atmospheric Water vapor into drops heavy enough to fall often making it to

Rainforests are home to two-thirds of all the living animal and plant species on Earth. Plants are living Organisms belonging to the kingdom Plantae. In Biology, a species is one of the basic units of Biological classification and a Taxonomic rank. EARTH was a short-lived Japanese vocal trio which released 6 singles and 1 album between 2000 and 2001 It has been estimated that many hundreds of millions of species of plants, insects and microorganisms are still undiscovered. A microorganism (also spelled micro organism or micro-organism and also called a microbe) is an Organism that is Microscopic (usually Tropical rainforests have been called the "jewels of the Earth," and the "world's largest pharmacy," because of the large number of natural medicines discovered there. Pharmacy (from the Greek φάρμακον 'pharmakon' = drug is the Health profession that links the Health sciences with the chemical sciences Medicine is the art and science of healing It encompasses a range of Health care practices evolved to maintain and restore Human Health by the

The undergrowth in a rainforest is restricted in many areas by the lack of sunlight at ground level. Undergrowth usually refers to the vegetation in a Forest, which can obstruct passage through the forest Sunlight, in the broad sense is the total spectrum of the Electromagnetic radiation given off by the Sun. This makes it possible to walk through the forest. If the leaf canopy is destroyed or thinned, the ground beneath is soon colonized by a dense, tangled growth of vines, shrubs and small trees called a jungle. In Botany, a leaf is an above-ground Plant organ specialized for Photosynthesis. The canopy is one of the uppermost levels of a Forest, below the emergent layer, formed by the Tree crowns Canopy trees refers to the trees A vine is any plant of Genus Vitis (the Grape plants or by extension any similar climbing or trailing plant A shrub or Bush is a horticultural rather than strictly botanical category of Woody plant, distinguished from a Tree A tree is a perennial Woody plant. It is most often defined as a woody plant that has many secondary branches supported clear of the ground on a single main stem or Jungle usually refers to a dense Forest in a hot climate such as a Tropical rainforest. The two types of rainforest are:

Contents

Soils

Despite the growth of vegetation in a rainforest, soil quality is often quite poor. Vegetation is a general term for the plant life of a region it refers to the Ground cover provided by plants The European Commission's Joint Research Centre proposed a definition stating that Soil quality is an account of the soil’s ability to provide ecosystem and social services Rapid bacterial decay prevents the accumulation of humus. The Bacteria ( singular: bacterium) are a large group of unicellular Microorganisms Typically a few Micrometres in length bacteria have Humus (Origin 1790–1800 Latin: earth ground) is the organic material in Soil lending it a dark brown or black colouration The concentration of iron and aluminium oxides by the laterization process gives the oxisols a bright red color and sometimes produces minable deposits such as bauxite). Iron (ˈаɪɚn is a Chemical element with the symbol Fe (ferrum and Atomic number 26 WikipediaNaming An oxide is a Chemical compound containing at least one Oxygen atom as well as at least one other element Laterite (from the Latin word "later" meaning brick or tile is a surface formation in hot and wet tropical areas which is enriched in Iron and Aluminium Oxisols are an order in USDA soil taxonomy, best known for their occurrence in Tropical Rain forest, 15-25 degrees north and south of the Equator Bauxite is the most important Aluminium Ore. It consists largely of the minerals Gibbsite Al(OH3 Boehmite γ-AlO(OH and On younger substrates, especially of volcanic origin, tropical soils may be quite fertile. Plate tectonics and hotspots Divergent plate boundaries At the

Effect on global climate

A natural rainforest emits and absorbs vast quantities of carbon dioxide. Carbon dioxide ( Chemical formula:) is a Chemical compound composed of two Oxygen Atoms covalently bonded to a single On a global scale, long-term fluxes are approximately in balance, so that an undisturbed rainforest would have a small net impact on atmospheric carbon dioxide levels,[3] though they may have other climatic effects (on cloud formation, for example, by recycling water vapour). A cloud is a visible mass of droplets or frozen crystals floating in the atmosphere above the surface of the Earth or another Planetary body General properties of water vapor Evaporation/sublimation Whenever a water molecule leaves a surface it is said to have evaporated No rainforest today can be considered to be undisturbed. [4] Human induced deforestation plays a significant role in causing rainforests to release carbon dioxide,[5] as do natural processes such as drought that result in tree death. [6] Some climate models run with interactive vegetation predict a large loss of Amazonian rainforest around 2050 due to drought, leading to forest dieback and the subsequent feedback of releasing more carbon dioxide. [7]

Rainforest layers

Rainforest in the Blue Mountains, Australia
Rainforest in the Blue Mountains, Australia

The rainforest is divided into four different parts, each with different plants and animals, adapted for life in that particular area:

Flora and Fauna

Millipede on the forest floor of Rio Muni, Equatorial Guinea
Millipede on the forest floor of Rio Muni, Equatorial Guinea

More than half of the world's species of plants and animals are found in the rainforest. Millipedes (Class Diplopoda, previously also known as Chilognatha are Arthropods that have two pairs of legs per segment (except for the first segment behind The Republic of Equatorial Guinea ( República de Guinea Ecuatorial,) is a country in Central Africa. Rainforests support a very broad array of fauna including mammals, reptiles, birds and invertebrates. Fauna is all of the Animal life of any particular region or time Mammals ( class Mammalia) are a class of Vertebrate Animals characterized by the presence of Sweat glands, including sweat glands Reptiles, or members of the class Reptilia are air-breathing Cold-blooded Vertebrates that have skin covered in scales as opposed to hair or feathers Birds ( class Aves) are bipedal endothermic ( Warm-blooded) Vertebrate animals that lay eggs. An invertebrate is an Animal lacking a Vertebral column. The group includes 98% of all animal Species — all animals except those in the Chordate Mammals may include primates, felids and other families. A primate is a member of the biological order Primates ( Latin: "prime first rank" the group that contains Lemurs the Aye-aye Felidae is the biological family of the cats a member of this family is called a felid. Reptiles include snakes, turtles, chameleons and other families while birds include such families as vangidae and Cuculidae. A snake is an elongate Reptile of the suborder Serpentes Like all reptiles snakes are covered in scales. Turtles are Reptiles of the Order Testudines (all living turtles belong to the Crown group Chelonia) most of Chameleons (family Chamaeleonidae) are squamates that belong to one of the best-known Lizard families The vangas are a group of little-known small to medium-sized Passerine Birds restricted to Madagascar. The cuckoos are a family Cuculidae, of Near passerine Birds The order Cuculiformes, in addition to the cuckoos also includes the Dozens of families of invertebrates are found in rainforests. Fungi are also very common in rainforest areas as they can feed on the decomposing remains of plant and animal life. A fungus (ˈfʌŋgəs is a eukaryotic Organism that is a member of the kingdom Fungi (ˈfʌndʒaɪ As a result of all the decomposing matter on the forest floor, rainforests develop high levels of organic matter in the soil, making it very nutritious for plant and animal life. This humus is a major factor in allowing rainforests to be highly active ecosystems, with rainforests home to more than two-thirds of the Earth's species. Humus (Origin 1790–1800 Latin: earth ground) is the organic material in Soil lending it a dark brown or black colouration This amounts to over 5 million species of plants and animals.

Human uses

Tropical rainforests provide timber as well as animal products such as meat and hides. Tropical rainforests are generally found near the Equator. They are common in Asia, Australia, Africa, South America, Central Rainforests also have value as tourism destinations and for the ecosystem services provided. Many foods originally came from tropical forests, and are still mostly grown on plantations in regions that were formerly primary forest. [11] Tropical rainforests are also the source of medicinal drug components.

Rainforests cover only six percent of the Earth, however, twenty-five percent of all drugs are derived from rainforest ingredients. [12]

More than 1,430 varieties of tropical plants are thought to be potential cures for cancer. The National Cancer Institute claims that 70 percent of the plants identified as having anti-cancer properties are found in the rainforest. The rainforest has shown to hold many other types of medicines as well, from everyday pain killers like aspirin to important cardiac drugs. In fact, plant derived medicines are commonly used for fever, fungal infections, burns, gastrointestinal problems, pain, respiratory problems, and wound treatment. [13]

Deforestation

Main article: Deforestation
Deforestation in the Amazon Rainforest, as seen from a satellite
Deforestation in the Amazon Rainforest, as seen from a satellite

Tropical and temperate rain forests have been subjected to heavy logging and agricultural clearance throughout the 20th century, and the area covered by rainforests around the world is rapidly shrinking. Deforestation is the conversion of Forested areas to non-forest land for use such as Arable land, Pasture, urban use logged area or wasteland Tropical rainforests are generally found near the Equator. They are common in Asia, Australia, Africa, South America, Central Temperate rainforests are Coniferous or broadleaf Forests that occur in the Temperate zone and receive high rainfall Logging is the process in which Trees are cut down for Forest management and Timber. The twentieth century of the Common Era began on Biologists have estimated that large numbers of species are being driven to extinction (possibly more than 50,000 a year) due to the removal of habitat with destruction of the rainforests. In Biology and Ecology, extinction is the cessation of existence of a Species or group of taxa. Protection and regeneration of the rainforests is a key goal of many environmental charities and organizations. (It is doubtful that this rate will be sustained as the relative cost of logging rises with dwindling resources. )

Another factor causing the loss of rainforest is expanding urban areas. Littoral Rainforest growing along coastal areas of eastern Australia is now rare due to ribbon development to accommodate the demand for seachange lifestyles. Littoral refers to the coast of an ocean or sea or to the banks of a river lake or estuary The coast is defined as the part of the land adjoining or near the Ocean. For a topic outline on this subject see List of basic Australia topics. Ribbon development means building houses along the roads radiating from a town A seachange (or sea change) is an abandonment of city living in favour of a perceived 'easier life' in rural coastal communities

About half of the mature tropical rainforests, between 750 to 800 million hectares of the original 1. Tropical rainforests are generally found near the Equator. They are common in Asia, Australia, Africa, South America, Central 5 to 1. 6 billion hectares that once graced the planet have already fallen. The devastation is already acute in South East Asia, the second of the world's great biodiversity hot spots. Most of what remains is in the Amazon basin, where the Amazon rainforest covered more than 600 million hectares, an area nearly two thirds the size of the United States. The Amazon Rainforest (Brazilian Portuguese: Floresta Amazônica or Amazônia; Spanish: Selva Amazónica or Amazonía The forests are being destroyed at an ever-quickening pace. Unless significant measures are taken on a world-wide basis to preserve them, by 2030 there will only be 10% remaining with another 10% in a degraded condition. 80% will have been lost and with them the natural diversity they contain will become extinct.

Many tropical countries, including Indonesia, Thailand, Malaysia, Bangladesh, China, Sri Lanka, Laos, Nigeria, Liberia, Guinea, Ghana and the Cote d'lvoire have already lost large areas of their rainforest. The Republic of Indonesia ( (Republik Indonesia is a Country in Southeast Asia. The Kingdom of Thailand (ˈtaɪlænd ราชอาณาจักรไทย, râːtɕʰa-ʔaːnaːtɕɑ̀k-tʰɑj For the biogeographical region see Malesia Malaysia (məˈleɪʒə or /məˈleɪziə/ is a country that consists of thirteen states and ( Bengali: বাংলাদেশ inc-Latn Bangladesh) officially China ( Wade-Giles ( Mandarin) Chung¹kuo² is a cultural region, an ancient Civilization, and depending on perspective a National Sri Lanka, officially the Democratic Socialist Republic of Sri Lanka ( Sinhalese:, இலங்கை known as Ceylon before 1972 is an Island Laos (ˈlɑːoʊs or /ˈlaʊs/ officially the Lao People's Democratic Republic, is a Landlocked country in Southeast Asia, bordered by Burma Nigeria, officially named the Federal Republic of Nigeria, is a federal Constitutional republic comprising thirty-six states and one Federal Liberia, officially the Republic of Liberia, is a country on the west coast of Africa, bordered by Sierra Leone, Guinea, Côte d'Ivoire Guinea, officially Republic of Guinea (pronounced /ˈgɪni/ République de Guinée is a country in West Africa, formerly known as French Guinea The Republic of Ghana is a country in West Africa. It borders Côte d'Ivoire (Ivory Coast to the west Burkina Faso to the north Togo to the Côte d'Ivoire (ˌkoʊt divˈwɑː(r ' in English, kot diˈvwaʀ in French) or Ivory Coast, officially the Republic of Côte d'Ivoire, is a Eighty percent of the forests of the Philippine archipelago have already been cut down. In 1960 Central America still had four fifths of its original forest; now it is left with only two fifths of it. Half of the Brazilian state of Rondonia's 24. Rondônia (xõˈdõnia is a state in Brazil, located in the north-western part of the country 3 million hectares have been destroyed or severely degraded in recent years. Several countries, notably the Philippines, Thailand and India have declared their deforestation a national emergency. The Philippines ( Filipino: Pilipinas, officially known as the Republic of the Philippines (fil ''Republika ng Pilipinas'' RP The Kingdom of Thailand (ˈtaɪlænd ราชอาณาจักรไทย, râːtɕʰa-ʔaːnaːtɕɑ̀k-tʰɑj India, officially the Republic of India (भारत गणराज्य inc-Latn Bhārat Gaṇarājya; see also other Indian languages) is a country [1][2]

See also

References

General references

Specific references

  1. ^ Broeker, Wallace S. (2006). "Breathing easy: Et tu, O2. " Columbia University http://www.columbia.edu/cu/21stC/issue-2.1/broecker.htm.
  2. ^ Moran, E. F. , "Deforestation and Land Use in the Brazilian Amazon," Human Ecology, Vol 21, No. 1, 1993"
  3. ^ http://www.grida.no/CLIMATE/IPCC_TAR/wg1/pdf/TAR-03.PDF
  4. ^ Lewis, S. L. , Phillips, O. L. , Baker, T. R. , Lloyd, J. et al 2004 “Concerted changes in tropical forest structure and dynamics: evidence from 50 South American long-term plots” Phil. Trans. R. Soc. Lond. 359
  5. ^ Malhi, Y and Grace, J. 2000 " Tropical forests and atmospheric carbon dioxide”, Tree 15
  6. ^ Drought may turn forests into carbon producers - Science - www.theage.com.au
  7. ^ http://www.metoffice.gov.uk/research/hadleycentre/pubs/HCTN/HCTN_42.pdf
  8. ^ Bourgeron, Patrick S. [1983]. "Spatial Aspects of Vegetation Structure", in Frank B. Golley: Tropical Rain Forest Ecosystems. Structure and Function, 14A, Ecosystems of the World, Elsevier Scientific, 29-47. ISBN 0444419861.  
  9. ^ Sabah. Eastern Native Tree Society. Retrieved on 2007-11-14. Year 2007 ( MMVII) was a Common year starting on Monday of the Gregorian calendar in the 21st century. Events 1533 - Conquistadors from Spain under the leadership of Francisco Pizarro arrive in Cajamarca, Inca
  10. ^ DENDRONAUTICS - Introduction
  11. ^ Myers, N. (1985). The primary source. W. W. Norton and Co. , New York, pp. 189-193.
  12. ^ Health Quest 2002 Amazon – Pharmacy from the Rainforest April 2008
  13. ^ Final Paper: The Medicinal Value of the Rainforest May, 15 2003. Amanda Haidet April 2008

Annual Rainforest Commitee of New York (ARCNY)

External links

Dictionary

rainforest

-noun

  1. a forest in a climate with high annual rainfall and no dry season
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